This is a curiosity question because I genuinely do not know or understand the reasoning and am just looking for information, so please do not flame me
Why do NPHC groups and other minority GLO's all refer to themselves as "Incorporated" when talking about their group (IE: "Alpha Phi Alpha Fraternity, Inc.") I see this all the time when it comes to BGLO and other non-caucasian groups, but never amongst NPC and NIC groups, or amongst other non-social groups (Alpha Phi Omega, Gamma Sigma Sigma, etc.) unless a particular chapter is made up of predominantly minority students.
To my knowledge, EVERY national GLO is incorporated in one way or another, so it is not like these groups have a status the other ones do not. Could someone explain the reasoning behind putting emphasis on the incorporation status?